Arjun will have a better gun barrel with an Equivalent Firing Charge (strength of the barrel to sustain firing) of 500 rounds against the T 72's 250 rounds.

Chennai-based Combat Vehicle Research and Development Establishment has designed the Mark II version of MBT at its facility here.

CVRDE co-ordinated with Armament Research and Development Establishment, Pune, High Energy Materials Research Laboratory, Pune, Instruments Research & Development Establishment, Dehradun, Centre for Fire, Explosive and Environment Safety, Delhi and Defence Metallurgical Research Laboratory, Hyderabad for designing Mark II.